Sodium cyanide vs. Environment-friendly Leaching Agents: A Comparative Analysis

I. Ndondomeko

Mu gawo la migodi ya golide , kusankha chotsukira golide kumachita gawo lofunika kwambiri pakutulutsa golide. Sodium cyanide yakhala njira yodziwika bwino yotulutsira golide chifukwa cha mphamvu yake yosungunula golide kuchokera ku miyala. Komabe, chifukwa cha kukulitsa kutetezedwa kwa chilengedwe ndi chitukuko chokhazikika, mitundu yatsopano ya zotsukira golide zomwe siziwononga chilengedwe yawonekera ngati njira zina. Nkhaniyi ikufuna kufananiza bwino sodium cyanide ndi zotsukira golide kuchokera kuzinthu zosiyanasiyana, kuphatikizapo kapangidwe kake, liwiro la zotsukira golide , momwe zimagwiritsidwira ntchito , kuchuluka kwa kuchira , momwe chilengedwe chimakhudzira, komanso zofunikira pa mayendedwe. Pochita izi, tikuyembekeza kupereka chidziwitso chofunikira kwa makampani opanga golide kuti apange zisankho zodziwa bwino za kusankha zotsukira golide.

II. Kupanga

2.1 Sodium Cyanide

Sodium cyanide ndi mankhwala omwe ali ndi formula NaCN. Lili ndi 98% yoyera ya sodium cyanide. Monga cholimba - maziko ndi ofooka - mchere wa asidi, uli ndi makhalidwe angapo odziwika. Mwakuthupi, zimawoneka ngati zolimba zoyera za crystalline, zomwe zimakhala zosavuta kuwononga, kutanthauza kuti zimayamwa mosavuta chinyezi kuchokera mumlengalenga. Ilinso ndi amondi owawa pang'ono - ngati fungo. Mankhwala, amatha kuchitapo kanthu. Imasungunuka m'madzi kupanga hydrogen cyanide (HCN) ndi sodium hydroxide, yankho lake kukhala lamchere kwambiri. Sodium cyanide imatha kuchitapo kanthu ndi zitsulo zosiyanasiyana, monga chitsulo, zinki, faifi tambala, mkuwa, cobalt, siliva, ndi cadmium, kupanga ma cyanides achitsulo. Pamaso pa okosijeni, imatha kusungunula zitsulo zamtengo wapatali monga golidi ndi siliva, kupanga mchere wosasunthika, womwe ndi maziko ake ogwiritsidwa ntchito kwambiri m'mafakitale a migodi ya golide pofuna kuchotsa golide. Komabe, ndi poizoni kwambiri. Ngakhale pang’ono kwambiri, munthu akamamwa pakhungu, akakoka mpweya, kapena akameza, akhoza kupha anthu ndi zamoyo zina.

2.2 Chilengedwe - Ma Agent ochezeka ochezeka

Othandizira zachilengedwe - ochezeka amabwera m'njira zosiyanasiyana, ndipo zolemba zawo zidapangidwa kuti zitheke kutulutsa golide moyenera ndikuchepetsa kuwononga chilengedwe. Mwachitsanzo, malo ena wamba - wochezeka leaching wothandizira ali mkulu woipa wa glycine ndi sodium ayodini. Glycine, monga amino acid wosavuta, siwowopsa ku chilengedwe ndi anthu. Pogwiritsa ntchito leaching, imatha kupanga zokhazikika zokhala ndi ayoni agolide, zomwe zimathandizira kusungunuka kwa golide kuchokera ku ores. Sodium iodide imathandizanso kwambiri. Ma ion a iodide amatha kutenga nawo gawo pazosintha za redox komanso njira zopangira zovuta, kupititsa patsogolo kutulutsa kwagolide. Zigawozi zimagwira ntchito mogwirizana kuti ziwongolere magwiridwe antchito a leaching agent. Kukhalapo kwa zinthu zotere sikumangopangitsa kuti golide atulutsidwe komanso kumachepetsa kuwononga chilengedwe poyerekeza ndi sodium cyanide. Kuphatikiza apo, malo ena - ochezeka ochezeka amatha kukhala ndi zowonjezera zina kapena ma chelating omwe amasankhidwa mosamala kuti akwaniritse njira yolumikizira, monga zinthu zomwe zimatha kusintha pH ya yankho la leaching, kuwongolera kusungunuka kwa ma ion achitsulo, kapena kupititsa patsogolo kusankhidwa kwa woperekera golide.

III. Leaching Rate

3.1 Kuchita kwa Sodium Cyanide

Kuthamanga kwa sodium cyanide ndikochepa. Pochotsa golide pogwiritsa ntchito sodium cyanide, zomwe zimachitika pakati pa sodium cyanide ndi golide mu ore zimakhudzidwa ndi zinthu zingapo. Mwachitsanzo, kuchuluka kwa mankhwala a miyala yamtengo wapatali kungalepheretse kugunda kwa mtima. Ngati miyalayo ili ndi mchere wambiri wa sulfide, monga pyrite ( ), sulfide imatha kuchitapo kanthu ndi mpweya mumlengalenga ndi madzi kupanga sulfuric acid ndi zinthu zina. Izi acidic chilengedwe akhoza imathandizira hydrolysis wa sodium cyanide, kupanga hydrogen cyanide mpweya ( ), amene osati kuchititsa imfa ya sodium cyanide komanso amachepetsa ogwira ndende ya leaching wothandizila mu yankho, motero kuchepetsa leaching mlingo wa golide. Kuphatikiza apo, kukula kwa tinthu tating'onoting'ono kumakhalanso ndi mphamvu yodziwika. Tinthu tating'ono ting'onoting'ono ta ore tokhala ndi malo ang'onoang'ono - mpaka - volume ratio, kutanthauza kuti malo olumikizana pakati pa sodium cyanide ndi golide mu ore ndi ochepa. Zotsatira zake, kuchuluka kwa zomwe zimachitika kumachepetsedwa, ndipo zimatenga nthawi yayitali kuti zitheke kutulutsa golide wina. Mwachitsanzo, m'migodi ina ya golide yomwe amagwiritsa ntchito sodium cyanide leaching, ntchito yokhetsa madzi imatha kutenga masiku angapo mpaka masabata kuti ithe, zomwe sizimangotalikitsa nthawi yopangira komanso kumawonjezera ndalama zopangira.

3.2 Kayendetsedwe ka Chilengedwe - Othandizira ochezeka ochezeka

Zothandizira zachilengedwe - ochezeka ochezeka nthawi zambiri amawonetsa kuthamanga kwachangu poyerekeza ndi sodium cyanide. Tengani mankhwala omwe ali ndi glycine ndi sodium iodide monga chitsanzo. Glycine imatha kupanga zinthu zokhazikika zokhala ndi ayoni agolide kudzera m'magulu ake amino ndi carboxyl. Mapangidwe a ma complexeswa ndi njira yofulumira kwambiri. Pamaso pa okosijeni, glycine amatha kuchitapo kanthu mwachangu ndi golide mu ore kuti asungunuke. Sodium iodide imathandizanso kwambiri. Ma ion a iodide amatha kutenga nawo gawo pazosintha za redox, kulimbikitsa makutidwe ndi okosijeni a golide. Kuphatikizana kwa zinthu ziwirizi kumatha kufulumizitsa kwambiri leaching. Kafukufuku wasonyeza kuti mu zoyesera zambiri, pogwiritsira ntchito malo oterowo - ochezeka ochezeka, nthawi yofunikira kuti afikire mlingo waukulu wochotsa golide ndi wamfupi kwambiri kuposa wa sodium cyanide. Mwachitsanzo, nthawi zina, nthawi ya leaching imatha kuchepetsedwa ndi theka kapena kuposa. Kuchulukirachulukira kumeneku sikumangowonjezera luso la kupanga komanso kumathandizira makampani amigodi kupeza zinthu zagolide mwachangu, ndikufulumizitsa kubweza ndalama. Kuphatikiza apo, malo ena - ochezeka ochezeka amapangidwa kuti athe kusinthika kumitundu yosiyanasiyana ya ore. Amatha kutulutsa golide kuchokera ku ore okhala ndi nyimbo zovuta, kukhalabe otsika kwambiri, womwe ndi mwayi womwe sodium cyanide alibe.

IV. Kugwiritsa Ntchito

Pankhani ya kuchuluka kwa anthu omwe amamwa, sodium cyanide ndi chilengedwe - ochezeka ochezeka amafanana.

4.1 Kugwiritsa ntchito sodium Cyanide

Pochotsa golide pogwiritsa ntchito sodium cyanide, kumwa kumakhudzidwa ndi zinthu zingapo. Kapangidwe kake ka miyala yamtengo wapatali ndi chinthu chofunika kwambiri. Mwachitsanzo, ngati miyalayo ili ndi zitsulo zambiri zomwe zimatha kuchita ndi sodium cyanide, monga mkuwa, zinki, ndi iron, zitsulozi zimapikisana ndi golide pogula sodium cyanide. Ma ions amkuwa mu ore amatha kuchitapo kanthu ndi sodium cyanide kupanga copper cyanide complexes. Ma reaction equation ndi . Izi sizimangopangitsa kuti sodium cyanide idye komanso imachepetsanso ndende yake yothandiza pakutulutsa golide. Nthawi zina, miyala ikakhala ndi zitsulo zosokoneza zotere, kumwa kwa sodium cyanide kumatha kuchuluka kwambiri. Kuphatikiza apo, kupezeka kwa mchere wina monga sulfide kumatha kukhudzanso kugwiritsa ntchito sodium cyanide. Mchere wa sulfide ukhoza kuchitapo kanthu ndi mpweya mumlengalenga ndi m'madzi kupanga sulfuric acid ndi zinthu zina m'malo otsetsereka. Izi acidic chilengedwe akhoza imathandizira hydrolysis wa sodium cyanide, kupanga hydrogen cyanide mpweya ( ), amene amachititsa imfa ya sodium cyanide. Komabe, m'malo ogwirira ntchito bwino komanso ores omwe ali ndi nyimbo zokhazikika, kuchuluka kwa sodium cyanide kumawerengedwa bwino ndikukhazikitsidwa m'makampani. Mwachitsanzo, pakafukufuku wamba wa golide wokhala ndi mtundu wina wa ore, kumwa kwa sodium cyanide kumatha kukhala kozungulira mtengo wake pa toni iliyonse ya ore yomwe yakonzedwa, yomwe imakhala ngati kalozera wamakampani opanga migodi kukonzekera ndi kuyang'anira momwe angagwiritsire ntchito regent.

4.2 Kugwiritsa Ntchito Chilengedwe - Ma Agents ochezeka ochezeka

Chilengedwe - ochezeka ochezeka, ngakhale amapangidwa mosiyanasiyana, amamwa mowa wofanana ndi wa sodium cyanide. Tengani mankhwala a glycine - ndi - sodium - iodide - based leaching agents monga chitsanzo. Glycine, ngakhale ilibe poizoni ndipo imakhala ndi njira yosiyana yofananira ndi sodium cyanide, imakhudzidwa ndi stoichiometrically ndi golide mu ore. Magulu a carboxyl ndi amino a glycine amatha kupanga zovuta ndi ayoni agolide. Zomwe zimachitika zimakhala zokhazikika, ndipo kuchuluka kwa glycine komwe kumafunikira kuti asungunuke golide wina kumatsimikiziridwa ndi equation yamankhwala. Sodium ayodini nawonso nawo anachita, ndi kumwa kwake n'zogwirizana ndi zochita redox ndi zovuta - mapangidwe njira nawo. The lonse mowa wa chilengedwe - wochezeka leaching wothandizira ndi kuchuluka kwa mowa wa chigawo chilichonse. Muzochita zambiri zothandiza komanso zoyesera, zapezeka kuti pochiza ore wofanana ndi golide wofanana ndi mawonekedwe, kuchuluka kwa chilengedwe - wochezeka wogwiritsa ntchito leaching wodyedwa ndi wofanana ndi sodium cyanide. Kufanana kumeneku pazakudya kumakhala kopindulitsa kwa makampani amigodi chifukwa kumapangitsa kuti pakhale kusintha kosasinthika pankhani yakukonzekera kupanga ndi kuyerekezera mtengo - poganizira zosintha kuchokera ku sodium cyanide kupita ku chilengedwe - m'malo ochezeka. Zikutanthauza kuti safunikira kusintha kwakukulu mu reagent awo - kugula ndi kufufuza - njira zoyendetsera ntchito chifukwa cha kusiyana kwakukulu kwa mitengo yamtengo wapatali.

V. Kubwezeretsa Mlingo

5.1 Kubwezeretsanso kwa Sodium Cyanide

Kubwezeretsanso kwa sodium cyanide pakuchotsa golide kwakhazikitsidwa bwino m'makampani amigodi ya golide kudzera muzochita ndi kafukufuku wanthawi yayitali. Pansi pazikhalidwe zabwino komanso zamitundu ina ya ores, sodium cyanide imatha kupeza golide wapamwamba kwambiri. Mwachitsanzo, m'migodi ya golide yoyendetsedwa bwino yokhala ndi miyala yomwe ili yoyenera kutulutsa sodium cyanide leaching, kuchira kumatha kufika 95% kapena kupitilira apo. Komabe, m'zochitika zenizeni zapadziko lonse lapansi, chiwopsezo chenichenicho chikhoza kukhala chochepa. Monga tanenera kale, kukhalapo kwa zitsulo zina mu ore kungakhudze kwambiri kuchira. Ngati miyalayo ili ndi mkuwa, zinki, kapena chitsulo chochuluka, zitsulozi zimatha kuchitapo kanthu ndi sodium cyanide, kuwononga chitsulo chotsitsa ndikuchepetsa kuchuluka kwa golide. Chotsatira chake, chiwongoladzanja chobwezeretsa golide chikhoza kutsika. Kuphatikiza apo, zinthu zosayenera zogwirira ntchito, monga kuwongolera mtengo wa pH molakwika, kusakwanira kwa okosijeni, kapena kuthamanga kosayenera kwa chipwirikiti panthawi ya leaching, kungayambitsenso kuchepa kwa kuchira. Mwachitsanzo, ngati mtengo wa pH wa yankho la leaching uli wotsika kwambiri, hydrolysis ya sodium cyanide imachulukitsidwa, zomwe zimapangitsa kuti chotsitsacho chiwonongeke komanso kuchepa kwa kusungunuka kwa golide, motero kukhudza kuchira.

5.2 Kubwezeretsanso kwa Chilengedwe - Ma Agents ochezeka ochezeka

Chiwopsezo cha chilengedwe - ochezeka ochezeka ndi ofanana kwambiri ndi sodium cyanide. Chilengedwe - ochezeka ochezeka amatha kupeza kuchira komwe kuli pafupifupi 90 - 95% ya sodium cyanide. Tengani mankhwala a glycine - ndi - sodium - iodide - based leaching agents monga chitsanzo. Mu zoyeserera zasayansi ndi mayesero ena am'munda, pochiza ores omwe ali ndi mawonekedwe ofanana, malo awa - othandizira ochezeka awonetsa bwino kwambiri pakuchotsa golide. Ngakhale kuti chiwopsezo chawo chochira chimakhala chochepa pang'ono kuposa cha sodium cyanide nthawi zina, akadali m'gulu lovomerezeka. Mwachitsanzo, mu mgodi wina wa golidi kumene ore ali ndi zikuchokera zosavuta, pambuyo kusintha kwa sodium cyanide kuti chilengedwe - wochezeka leaching wothandizira, golide kuchira mlingo watsika kuchokera 93% (ndi sodium cyanide) mpaka 90% (ndi chilengedwe - wochezeka leaching wothandizira), kuchepetsa 3 peresenti mfundo. Kusiyanako pang'ono kumeneku pamlingo wochira nthawi zambiri kumathetsedwa ndi zabwino zambiri za chilengedwe - othandizira ochezeka ochezeka, monga kuyanjana kwawo ndi chilengedwe, kuthamanga kwachangu, komanso kuchuluka kwa momwe amagwiritsidwira ntchito. Kuphatikiza apo, pakufufuza kosalekeza ndi chitukuko, magwiridwe antchito a chilengedwe - ochezeka ochezeka akuyenda bwino nthawi zonse. Asayansi akuyesetsa kukonza kapangidwe ka ma leaching agents, kuwonjezera zowonjezera kapena kusintha magawo omwe alipo kuti awonjezere kubweza golide wawo. Zotsatira zake, kusiyana kwa ziwongola dzanja pakati pa chilengedwe - ochezeka ochezeka ndi sodium cyanide akuyembekezeka kuchepa kwambiri mtsogolomo.

VI. Environmental Impact

6.1 Zowopsa za Sodium Cyanide

Sodium cyanide ndi poyizoni kwambiri ndipo imawopseza kwambiri chilengedwe. Sodium cyanide ikagwiritsidwa ntchito pamigodi ya golide, zotsalira zake zimakhala ndi zotsalira za sodium cyanide ndi zinthu zina zovulaza. Ngati sichinasamalidwe bwino, zotsalira izi zitha kukhala ndi zotsatira zoyipa zingapo. Mwachitsanzo, nthawi zina pamene michira imatulutsidwa m'madzi, sodium cyanide yomwe ili m'michira imatha kusungunuka m'madzi, kutulutsa ayoni oopsa kwambiri a cyanide. Ma cyanide ions awa amatha kuchitapo kanthu ndi ayoni achitsulo m'madzi kuti apange zitsulo zosiyanasiyana - cyanide complexes, zomwe ndi zovulaza kwambiri zamoyo zam'madzi. Ngakhale pamalo otsika kwambiri, cyanide imatha kuletsa ma enzymes opuma a nsomba ndi nyama zina zam'madzi, zomwe zimatsogolera ku imfa yawo. Zitha kusokonezanso momwe chilengedwe chimayendera m'madzi, zomwe zimakhudza kukula ndi kubereka kwa plankton, zomera zam'madzi, ndi zamoyo zina zomwe zili m'munsi mwa mndandanda wa zakudya, zomwe zimapangitsa kuchepa kwakukulu kwa zamoyo zosiyanasiyana za chilengedwe chonse cha m'madzi.

Kuphatikiza apo, ngati michira yokhala ndi sodium cyanide yasiyidwa panja, imatha kukokoloka ndi mphepo ndi mvula. Cyanide - yomwe ili ndi zinthu zomwe zili m'mphepete mwake zimatha kunyamulidwa ndi madzi amvula kupita ku dothi lapafupi ndi madzi apansi. Izi zikhoza kuwononga nthaka, kuchepetsa chonde m'nthaka komanso kusokoneza kukula kwa zomera. Cyanide imathanso kulowa m'madzi apansi panthaka, zomwe zimapangitsa kuti madzi apansi akhale osayenera kugwiritsidwa ntchito ndi anthu komanso ulimi wothirira. M'madera ena kumene migodi ya golide yogwiritsira ntchito sodium cyanide ilipo, kuyang'anira kwa nthawi yaitali kwa chilengedwe kwawonetsa kuti nthaka ndi madzi apansi m'madera ozungulira aipitsidwa mosiyanasiyana, ndi milingo yokwera ya cyanide ndi zitsulo zolemera, zomwe zimakhala ndi zotsatira zoipa kwa nthawi yaitali pa chilengedwe cha m'deralo ndi momwe anthu amakhalamo.

6.2 Ubwino wa Chilengedwe - Othandizira ochezeka ochezeka

Environment - ochezeka leaching wothandizira, Komano, kupereka kwambiri chilengedwe ubwenzi. Pambuyo pochotsa golide pogwiritsa ntchito nthumwizi, zotsatira zake zimakhala ndi zotsatira zochepa kwambiri pa chilengedwe. Mwachitsanzo, malo ena - ochezeka ochezeka alibe zinthu zapoizoni monga sodium cyanide. Michira ikatulutsidwa kapena kukonzedwanso, sangawononge kwambiri chilengedwe. M'malo mwake, nthawi zina, ma tailings amathandizidwa ndi malo ena - ochezeka ochezeka amatha kugwiritsidwa ntchito kukonza nthaka. Mwachitsanzo, m'mapulojekiti ena oyesera, michira yochotsa golide pogwiritsa ntchito chilengedwe - ma leaching agents ochezeka apezeka kuti ndi oyenera kulima nthaka pambuyo pa chithandizo choyenera. Michira iyi imatha kusakanizidwa ndi dothi lina - zokometsera ndikuyika kumtunda. Zinthu zomwe zili m'michira zingathandize kukonza dothi, kuonjezera porosity ya nthaka, ndikuwonjezera mphamvu yosunga madzi. Zotsatira zake, dothi likhoza kukhala loyenera kumera, ndipo mbewu zosiyanasiyana ndi zomera zimatha kubzalidwa bwino. Izi sizimangochepetsa zovuta za chilengedwe pakuchotsa michira komanso zimapereka njira yatsopano yogwiritsira ntchito bwino zinthu za tailings, kulimbikitsa chitukuko chokhazikika cha chilengedwe m'dera la migodi. Zikusonyeza kuti anthu ochezeka ndi zachilengedwe angathe kuchepetsa mmene migodi ya golide imagwirira ntchito komanso kuti migodi ikhale yogwirizana komanso chilengedwe.

VII. Kusamala Pamayendedwe

7.1 Sodium Cyanide

Kunyamula sodium cyanide ndi njira yoyendetsedwa bwino komanso yosamala chifukwa cha kawopsedwe kake. Sodium cyanide imafuna nyanja yapadera yowopsa - mayendedwe onyamula katundu. Makampani otumiza zombo omwe amagwiritsa ntchito sodium cyanide ayenera kukhala ndi zilolezo zenizeni ndikutsatira malamulo okhwima apanyanja apadziko lonse lapansi, monga Code International Maritime Dangerous Goods (IMDG) Code. Khodi iyi imafotokoza za kasungidwe, kagwiridwe, ndi kasungidwe koyenera kwa katundu wowopsa panthawi yamayendedwe apanyanja kuti apewe kutayikira kapena ngozi zilizonse.

Pankhani yakuyika, sodium cyanide iyenera kukhala m'matumba osindikizidwa. Nthawi zambiri imakhala yodzaza mumlengalenga - zotengera zolimba zopangidwa ndi zinthu zomwe zimatha kupirira kuwonongeka komanso kukhazikika kwa sodium cyanide. Zotengerazi zapangidwa kuti ziteteze kukhudzana kulikonse ndi mpweya, chinyezi, kapena zinthu zina zomwe zingayambitse zoopsa. Mwachitsanzo, ikhoza kuikidwa m'matumba achitsulo okhala ndi matumba apulasitiki okhala ndi mizere iwiri kuti atsimikizire chitetezo chokwanira. Panthawi yoyendetsa, ndondomeko yonseyi imayang'aniridwa mosamala, ndipo njira zotetezera zokhazikika zimakhazikitsidwa. Ogwira ntchito zachipatala ali ndi udindo wonyamula ndi kunyamula sodium cyanide, ndipo ayenera kukhala ophunzitsidwa bwino momwe angathanirane ndi ngozi zadzidzidzi zokhudzana ndi mankhwala oopsa kwambiri.

7.2 Chilengedwe - Ma Agent ochezeka ochezeka

Mosiyana ndi izi, chilengedwe - ochezeka ochezeka amasangalala ndi zoyendera. Amatha kunyamulidwa kudzera munjira wamba zotengera mankhwala. Izi zikutanthauza kuti amatha kunyamulidwa ndi magalimoto okhazikika, masitima apamtunda, kapena zombo zomwe zimagwiritsidwa ntchito ponyamula mankhwala omwe si owopsa kwambiri. Palibe chifukwa cha njira zapadera, zoletsedwa kwambiri zotumizira monga momwe zilili ndi sodium cyanide.

Kupaka kwa chilengedwe - ma leaching agents ochezeka nawonso amakhala owongoka, nthawi zambiri amatengera kuyika kwanthawi zonse. Mwachitsanzo, amatha kupakidwa m'ng'oma zapulasitiki kapena zikwama zomwe zimakwaniritsa zofunikira pakuyika mankhwala. Kuyika uku sikungotengera mtengo - kothandiza komanso kumathandizira mayendedwe. Popeza ma leaching agents awa ndiwowopsa kwambiri, makampani oyendetsa mayendedwe safunikira kuyika ndalama pazida zapadera kapena kuphunzitsa anthu zamayendedwe awo. Izi zimapangitsa kuti njira zogulitsira zachilengedwe - ochezeka ochezeka kukhala osinthika komanso ofikirika, kuchepetsa mtengo wamayendedwe ndi zovuta zamakampani opanga migodi.

VIII. Mapeto

Pomaliza, ngakhale kuti sodium cyanide yakhala ikugwiritsidwa ntchito kwanthawi yayitali m'migodi ya golide pochotsa golide, chilengedwe - ma leaching agents ochezeka amapereka njira ina yokhazikika komanso yothandiza. Environment - ochezeka leaching wothandizira ali mofulumira leaching mlingo, amene akhoza kwambiri patsogolo kupanga bwino. Miyezo yawo yofananira yochira ndi sodium cyanide imawonetsetsa kuti kuchuluka kwa golide wotengedwa sikuwonongeka. Komanso, ubwenzi wawo wabwino kwambiri ndi chilengedwe ndi mwayi waukulu, chifukwa amatha kuchepetsa zovuta zachilengedwe zomwe zimagwirizanitsidwa ndi migodi ya golidi, makamaka ponena za kutaya michira. Zomwe zimafunikira pamayendedwe osavuta - ochezeka ochezeka amathandiziranso pakuchepetsa mtengo - komanso kumasuka.

Ngakhale pakhoza kukhala zovuta monga kukwera mtengo koyambirira nthawi zina kapena kufunikira kowonjezera kukhathamiritsa kwamitundu ina ya miyala, ndikufufuza kosalekeza ndi chitukuko, zovutazi zitha kuthetsedwa. Pamene chidwi chapadziko lonse chokhudza kuteteza chilengedwe ndi chitukuko chokhazikika chikukulirakulira, mabungwe ochezeka ndi zachilengedwe akuyembekezeka kutenga gawo lofunikira kwambiri pantchito yamigodi ya golide, pang'onopang'ono kukhala chisankho chachikulu pakukumba golide mtsogolo.